EP 2267553 A4 20120328 - IMAGE FORMATION DEVICE
Title (en)
IMAGE FORMATION DEVICE
Title (de)
BILDERZEUGUNGSVORRICHTUNG
Title (fr)
DISPOSITIF DE FORMATION D IMAGES
Publication
Application
Priority
- JP 2009057402 W 20090410
- JP 2008102084 A 20080410
Abstract (en)
[origin: US2010209147A1] A duty ratio Du (%), denoted by (T2/(T1+T2))×100, is in the range of 60≰Du≰80; a magnetic carrier has a resistivity ρ which decreases in accordance with an increasing electric field strength, and a relative dielectric constant ∈ which increases in accordance with an increasing electric field strength; a product of a time constant ∈0∈ρ(s) of electric charge decay in an electric field strength E2D decided by a second peak voltage V2 and a dark potential VD, and an electric field strength E2D satisfies a relation of 20≰∈0∈ρ E2D (s·V/cm); and a time constant ∈0∈ρ(s) and a relative dielectric constant ∈ in an electric field strength E1L, which is decided by a first peak voltage V1 and a bright potential VL, satisfy the following relations: ∈0∈ρ(s)≰6.0×10−4, and 30≰∈.
IPC 8 full level
G03G 15/06 (2006.01); G03G 5/08 (2006.01); G03G 9/10 (2006.01); G03G 9/113 (2006.01); G03G 15/09 (2006.01)
CPC (source: EP US)
G03G 9/1075 (2013.01 - EP US); G03G 9/108 (2020.08 - EP US); G03G 9/1085 (2020.08 - EP US); G03G 9/1088 (2020.08 - EP US); G03G 15/0907 (2013.01 - EP US); G03G 2215/0602 (2013.01 - EP US)
Citation (search report)
- [A] JP 2000284523 A 20001013 - RICOH KK
- [A] US 5678130 A 19971014 - ENOMOTO NAOKI [JP], et al
- [A] JP 2006259010 A 20060928 - RICOH KK
- See references of WO 2009125856A1
Citation (examination)
EP 0801335 A1 19971015 - CANON KK [JP]
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK TR
DOCDB simple family (publication)
US 2010209147 A1 20100819; US 8204412 B2 20120619; CN 101981517 A 20110223; CN 101981517 B 20130313; EP 2267553 A1 20101229; EP 2267553 A4 20120328; JP WO2009125856 A1 20110804; WO 2009125856 A1 20091015
DOCDB simple family (application)
US 77153910 A 20100430; CN 200980111696 A 20090410; EP 09729484 A 20090410; JP 2009057402 W 20090410; JP 2010507293 A 20090410